Cool mate, I tried the pod from one of the others and it still has the fault. Is it common for faults to develop like this? Also I fitted a key type kill switch in line with the black wire that feeds to the rocker switch, could that possibly cause a issue?
It's looking likely that its the control box then (unless both pods aren't working
) As the electrics in a C5 are approaching 30 years old, it is fairly common for faults like this to occur, I have a POD that has flashing LEDs myself, though in my case I know the ULA is broken
Your kill switch is unlikely to have any effect on it, I'd suspect the LM358 in the control box. As you have a large number of C5's to repair I'd guess a few of them will have electrical problems in both POD/control box.
When you come to looking at the POD during the restorations its a good idea to check the connector pins at the back are clean and there are no broken solder joints on the POD PCB, these are fairly common. Check none of the resistors are burnt out, this can happen as well.
Also Dan, if it turns out to be the chip in the control box, is it possible to pull the chip from another and try or is it a case of changing the whole board in the box?
You can yes but it may be tricky as the chip is soldered straight to the PCB. You can pick up a bunch of 10 LM358's off of ebay
for about £3.
If you do remove them it's worth putting in a socket so you can easily change them in the future. I also posted this modification which can enhance the life of this chip
As for the POD ULA chip, this is thankfully in a socket and you can freely interchange this chip with other POD's. Just be careful of static discharge damaging it
posted on: 17/07/2013 20:40:01